PU Aurigae is an irregular variable star located in the constellation Auriga. A red giant, it varies by 0.1 magnitude around magnitude 5.64,[7] so it is faintly visible to the naked eye. Located around 590 light-years distant, it shines with a luminosity approximately 1,523 times that of the Sun and has a surface temperature of 3,482 K.[2][5]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Auriga |
| Right ascension | 05h 18m 15.69723s[2] |
| Declination | +42° 47′ 31.5967″[2] |
| Apparent magnitude (V) | 5.55[3] |
| Characteristics | |
| Spectral type | M4 III[3] |
| Apparent magnitude (G) | 4.17[2] |
| B−V color index | 1.492±0.012[3] |
| Variable type | Lb[4] |
| Astrometry | |
| Radial velocity (Rv) | −38.41±1.02[3] km/s |
| Proper motion (μ) | RA: +18.722±0.183[2] mas/yr Dec.: −30.380±0.144[2] mas/yr |
| Parallax (π) | 5.4835±0.1650 mas[2] |
| Distance | 590 ± 20 ly (182 ± 5 pc) |
| Absolute magnitude (MV) | −0.63[3] |
| Details | |
| Radius | 107[5] R☉ |
| Luminosity | 1,523[5] L☉ |
| Temperature | 3,482[5] K |
| Other designations | |
| PU Aurigae, BD+42° 1239, HD 34269, HIP 24738, HR 1722, SAO 40214, Gaia DR3 207274026495027712[6] | |
| Database references | |
| SIMBAD | data |
Although the star was first found to be variable by Joel Stebbins and Charles Morse Huffer in 1928,[8] it was not given its variable star designation until 1977.[9]
References
edit- ↑ "Hipparcos Tools Interactive Data Access". Hipparcos. ESA. Retrieved 8 December 2021.
- 1 2 3 4 5 6 7 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- 1 2 3 4 5 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644.
- ↑ Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
- 1 2 3 4 McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental Parameters and Infrared Excesses of Hipparcos Stars". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–57. arXiv:1208.2037. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x. S2CID 118665352.
- ↑ "HD 34269". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 22 August 2018.
- ↑ Watson, Christopher (4 January 2010). "PU Aurigae". The International Variable Star Index. American Association of Variable Star Observers. Retrieved 17 June 2015.
- ↑ Stebbins, Joel; Huffer, C. M. (1928). "The Constancy of the Light of Red Stars". Publications of the Washburn Observatory. 15: 137–174. Bibcode:1928PWasO..15..137S. Retrieved 12 October 2024.
- ↑ Kukarkin, B. V.; Kholopov, P. N.; Fedorovich, V. P.; Kireyeva, N. N.; Kukarkina, N. P.; Medvedeva, G. I.; Perova, N. B. (March 1977). "62nd Name-List of Variable Stars" (PDF). Information Bulletin on Variable Stars. 1248: 1. Bibcode:1977IBVS.1248....1K. Retrieved 12 October 2024.
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